HESI LPN
Pediatric Practice Exam HESI
1. A 3-month-old infant has been hospitalized with respiratory syncytial virus (RSV). What is the priority intervention?
- A. Administering an antiviral agent
- B. Clustering care to conserve energy
- C. Offering oral fluids to promote hydration
- D. Providing an antitussive agent when necessary
Correct answer: B
Rationale: The priority intervention for a 3-month-old infant hospitalized with respiratory syncytial virus (RSV) is clustering care to conserve energy. Infants with RSV often struggle to breathe and require rest periods to recover. Clustering care involves organizing nursing activities to allow for rest intervals, reducing the infant's energy expenditure and aiding recovery. Administering antiviral agents is not the primary intervention for RSV since it is a viral infection, and antiviral medications may not be effective against RSV. While offering oral fluids is crucial for hydration, it may not be the priority when the infant is having respiratory difficulties. Providing an antitussive agent when necessary can help with coughing but is not the priority intervention for managing RSV in this scenario.
2. Your assessment of a mother in active labor reveals that a limb is protruding from the vagina. Management of this condition should include:
- A. Positioning the mother in a semi-Fowler's position, administering oxygen, and providing transport
- B. Positioning the mother in a head-down position with her hips elevated, administering oxygen, and providing transport
- C. Applying gentle traction to the protruding limb to remove pressure of the fetus from the umbilical cord
- D. Giving the mother 100% oxygen and attempting to manipulate the protruding limb so that delivery can occur
Correct answer: B
Rationale: In a situation where a limb is protruding from the vagina during active labor, the correct management includes positioning the mother in a head-down position with her hips elevated. This position helps relieve pressure on the umbilical cord and improves oxygenation to the fetus. Administering oxygen is important to ensure adequate oxygen supply to both the mother and the baby. Providing transport is necessary for prompt transfer to a medical facility for further management. Applying gentle traction to the protruding limb is not recommended as it can cause harm to the baby and should be avoided. Giving 100% oxygen and attempting to manipulate the protruding limb is not the correct approach and can potentially lead to further complications.
3. Upon assessing a newborn immediately after delivery, you note that the infant is breathing spontaneously and has a heart rate of 90 beats/min. What is the most appropriate initial management for this newborn?
- A. Begin positive pressure ventilations
- B. Provide blow-by oxygen with oxygen tubing
- C. Assess the newborn's skin condition and color
- D. Start chest compressions and contact medical control
Correct answer: A
Rationale: In a newborn, a heart rate below 100 beats/min indicates the need for positive pressure ventilation to improve oxygenation. Providing blow-by oxygen or assessing skin condition/color may not address the primary issue of inadequate oxygenation due to the low heart rate. Starting chest compressions and contacting medical control is not warranted as the newborn is breathing spontaneously and only has a slightly low heart rate, which can be managed initially with positive pressure ventilations.
4. At 0345, you receive a call for a woman in labor. Upon arriving at the scene, you are greeted by a very anxious man who tells you that his wife is having her baby 'now.' This man escorts you into the living room where a 25-year-old woman is lying on the couch in obvious pain. After determining that delivery is not imminent, you begin transport. While en route, the mother tells you that she feels the urge to push. You assess her and see the top of the baby's head bulging from the vagina. What is your most appropriate first action?
- A. allow the head to deliver and check for the location of the cord
- B. advise your partner to stop the ambulance and assist with the delivery
- C. tell the mother to take short, quick breaths until you arrive at the hospital
- D. prepare the mother for an emergency delivery and open the obstetrics kit
Correct answer: B
Rationale: The correct action in this scenario is to advise your partner to stop the ambulance and assist with the delivery. When the mother feels the urge to push and you see the baby's head bulging from the vagina, it indicates an imminent delivery. Stopping the ambulance allows for a safer environment for the delivery of the baby and ensures that immediate assistance can be provided to both the mother and the newborn. Allowing the head to deliver before checking for the cord (Choice A) may delay necessary interventions in case of complications. Instructing the mother to take short, quick breaths (Choice C) is not appropriate when the baby's head is already visible. Preparing for an emergency delivery and opening the obstetrics kit (Choice D) is important but should come after stopping the ambulance and assisting with the imminent birth.
5. When teaching a class about trisomy 21, the instructor would identify the cause of this disorder as:
- A. nondisjunction.
- B. X-linked recessive inheritance.
- C. genomic imprinting.
- D. autosomal dominant inheritance.
Correct answer: A
Rationale: Trisomy 21, also known as Down syndrome, is caused by nondisjunction, which is an error in cell division that leads to the presence of an extra chromosome 21. This additional chromosome alters the normal genetic makeup, resulting in the characteristics associated with Down syndrome. Therefore, the correct answer is nondisjunction (Choice A). Choices B, C, and D are incorrect because Trisomy 21 is not caused by X-linked recessive inheritance, genomic imprinting, or autosomal dominant inheritance. Understanding the specific genetic mechanism involved in Trisomy 21 is crucial for grasping the basis of this chromosomal disorder.
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